Diffusion evaporator for active substances



FIG. 1 is a front perspective view of a diffusion evaporator for active substances showing the new design;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a top view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a rear view thereof; and,

FIG. 7 is a right side view thereof. 

The ornamental design for a diffusion evaporator for active substances, as shown. 